Piper Company purchased equipment on March 1, 2023 for $92,000. It was assigned a life of seven years or 100,000 units. Salvage value was estimated at $8,000. A) Compute depreciation expense using the straight-line method for 2023. B) Compute depreciation expense using the straight-line method for 2024. C) If the machine produced 12,000 units in 2024, compute depreciation expense using the units-of-activity method